V.V.V.IMPORTANT VERY SHORT ANSWER QUESTIONS FOR QUARTERLY

1.What is tautonymy? Give one example
A:The practice of naming the animals,in which the generic and the specific names are same. Eg:- Naja naja
2.Define the term species
A:Species is an interbreeding group of similar individuals producing fertile offspring,sharing a common genepool.
3.What is hyperparasite?
A:A parasite that lives on another parasite Eg: Nosema notabilis lives as parasite on Sphaerophora which is a parasite on toadfish
4.Define incubationperiod
A:The time interval between the entry of sporozoites into the body and the onset of malarial fever is called incubation period
5.What is meant by ovoviviparity?
A:The the process of production of eggs in which the eggs are hatched within the body of female without obtaining food from it.
6.What is meant by nocturnalperiodicity?
A:In human being the microfilaria larvae move to the peripheral blood vessels from deeper bloodvessels during nights between 10 pm and 4 am.This is called nocturnal periodicity
7.Define kinety
A:A longitudinal row of Kinetosomes ,kinetodesmos and kinetodesmata are together called kinety
8.Distinguish between synchronous and metachronous rhythms in Paramecium
A:Synchronous rhythm :- Simultaneous beating of transverse row of cilia
Metachronous rhythm:- Beating of longitudinal cilia one after another
9.What is plasmotomy?
A:It is a division of multinucleate protozoan into multinucleate daughter individuals by cytoplasmic division but without nuclear division.
10.Which symmetry is known as homaxial apolarsymmetry?Give one example
A:Spherical symmetry is known as homaxial apolarsymmetry Eg:-Heliozoans
11.Which symmetry is known as monoaxial heteropolarsymmetry?Give one example
A:Radial symmetry is called monoaxial heteropolarsymmetry Eg:-Hydra12.What is pseudocoelomate condition?Name the major pseudocoelomate phylum
A:The coelom which is neither formed in the mesoderm nor is lined by mesodermal peritonium Eg:-Phylum Nematoda
13.What is transitional epithelium? What is its significance?
A:The epithelium which is specialized to withstand a greater degree of stretch. The transitional epithelium of undistended unrinary bladder has about 4 or 5 layers ,when the bladder is full it appears to be with 2 or 3 layers thick